CHEMICAL REACTION ENGINEERING QUIZ

Variation in reactor volume

Constant residence time

Variation in extent of reaction and properties of the reaction mixture with time

Very low conversion

Temperature of the system

Initial concentration of reactants

Time of reaction

Extent of reaction

Unpredictable from the data

Remains unchanged

Increases

Decreases

The energy of reacting molecules exceeds the activation energy by absorption of light

It is a reversible reaction

It is an exothermic reaction

None of these

12

6

24

18

Alters the reaction mechanism

Decreases the activation energy

Increases the frequency of collisions of reacting species

All of these

The catalyst does not form an intermediate complex with the reactant

The surface of the catalyst does not play an important role during reaction

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

Prohibitively costly

Proteinous in nature

Active at very high temperature only

Active at cryogenic temperatures only

Exp(- E/2RT)

Tm.exp(- E/RT)

Exp(- E/RT)

√T

Catalyst

Reactant's concentration

Temperature

Number of molecules of reactants taking part in the reaction